CN220732601U - Special transformer acquisition terminal control loop analog power supply - Google Patents
Special transformer acquisition terminal control loop analog power supply Download PDFInfo
- Publication number
- CN220732601U CN220732601U CN202322463380.XU CN202322463380U CN220732601U CN 220732601 U CN220732601 U CN 220732601U CN 202322463380 U CN202322463380 U CN 202322463380U CN 220732601 U CN220732601 U CN 220732601U
- Authority
- CN
- China
- Prior art keywords
- power supply
- alternating current
- acquisition terminal
- transformer
- control loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims description 14
- 238000005070 sampling Methods 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000004088 simulation Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 239000013642 negative control Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Abstract
The utility model discloses a special transformer acquisition terminal control loop simulation power supply, which belongs to a mobile power supply for special transformer testing, and aims to accurately check and judge the control function of a terminal in the aspects of terminal debugging, fault detection and the like. The alternating current-direct current power supply comprises a lithium battery, a booster circuit, a full-bridge inverter circuit, an isolation transformer and an adjustable switch power supply, wherein the power supply of the lithium battery is boosted by the booster circuit and then provided for the full-bridge inverter circuit of a later stage, the power supply is transformed into 220V alternating current by the isolation transformer, the 220V alternating current is divided into two paths, one path of the alternating current is directly output, and the other path of the alternating current generates direct current voltage required by the current place by the adjustable switch power supply; the shunt release is connected in series with an alternating current-direct current power supply. The analog power supply is mainly used for analog power supply for analog tripping function test and a virtual load of a control loop of the tripping device, and has the characteristics of meeting the on-site alternating current, direct current and multiple voltage specifications.
Description
Technical Field
The utility model belongs to a mobile power supply for a special transformer test, and particularly relates to a special transformer acquisition terminal control loop analog power supply.
Background
The main functions of the special transformer terminal comprise data acquisition, electric energy metering, data processing, parameter setting and inquiry, control, event recording, active reporting and other expansion functions. The control function is mainly used for power fixed value closed loop control, prepayment control, electricity protection/rejection, remote control, user load flexible control, remote closing and the like.
Debugging after the terminal field installation wiring is finished, troubleshooting in the terminal operation and the like all need to carry out correct inspection and judgment on the control function of the terminal. Therefore, research is necessary to develop aiming at the key field detection technology of the load control function of the private transformer acquisition terminal, so that an instrument capable of guaranteeing the safety control of the private transformer acquisition terminal by field personnel to the maximum extent is developed, the personal safety of operators is guaranteed, and meanwhile, the field personnel can conveniently conduct abnormal wiring, equipment fault and abnormal control of a main station on the private transformer acquisition terminal; the installation debugging and operation checking of the field terminal can be performed normally, rapidly and safely by field personnel. Therefore, the design of the on-site simulation power supply for realizing the continuous power-off test of the client has great application value and development prospect.
Disclosure of Invention
The utility model aims to solve the technical problems and provide a special transformer acquisition terminal control loop simulation power supply, which is used for guaranteeing safety control of field personnel on the special transformer acquisition terminal to the maximum extent, judging influence of power supply factors on the loop state of the special transformer acquisition terminal and realizing construction of a test environment by a field client without power failure.
In order to achieve the above object, the utility model provides a special transformer acquisition terminal control loop analog power supply comprising:
the alternating current-direct current power supply comprises a lithium battery, a booster circuit, a full-bridge inverter circuit, an isolation transformer and an adjustable switch power supply, wherein: the power supply of the lithium battery is boosted by the booster circuit and then is provided for a full-bridge inverter circuit of a later stage, then the voltage is changed into 220V alternating current by an isolation transformer, the 220V alternating current is divided into two paths, one path of alternating current is directly output, and the other path of alternating current generates direct current voltage required by the current place by an adjustable switch power supply;
the shunt release is connected with the AC/DC power supply in series;
and the power line is used for connecting the special transformer acquisition terminal.
The simulation power supply has the advantages of being light in weight, high in capacity and high in power, capable of outputting alternating current and direct current test power supplies, convenient to carry, capable of meeting the power consumption requirements of on-site negative control detection of a special transformer acquisition terminal, capable of simulating the level state on a loop of the on-site special transformer acquisition terminal, comprising an alternating current and direct current state and a voltage range, capable of counting actual several gear ranges according to a standard range according to a terminal sampling signal and a signal state of a control end of a controlled circuit breaker (capable of counting actual several gear ranges according to the standard related range), judging the influence of power supply factors on the loop state of the special transformer acquisition terminal, and capable of simulating on-site tripping environments (direct current 0-120V alternating current 0-260V and two negative control switches) by utilizing the working characteristics of a shunt release in the simulation power supply, so that the on-site client can complete the test without power outage.
The analog power supply is mainly used for analog power supply for analog tripping function test and a virtual load of a control loop of the tripping device, and has the characteristics of meeting the on-site alternating current, direct current and multiple voltage specifications.
Preferably, the booster circuit converts the power supply of the lithium battery into alternating current power supply by utilizing a pulse width modulation technology, boosts the power supply by a high-frequency booster transformer, and obtains high-voltage direct current after rectifying and filtering to be supplied to a full-bridge inverter circuit of a later stage. Specifically, the boost circuit comprises two triodes and a transformer, wherein the base electrodes of the two triodes are input with pulse width modulation signals, the emitting electrodes of the two triodes are connected with the cathode of the lithium battery, the collecting electrode of one triode is connected with one end of the primary coil of the high-frequency boost transformer, the collecting electrode of the other triode is connected with the other end of the primary coil of the high-frequency boost transformer, and the middle point of the primary coil of the high-frequency boost transformer is connected with the anode of the lithium battery.
Preferably, the full-bridge inverter circuit is formed by a full-bridge switch and comprises a high-frequency square wave with sinusoidal content, after power amplification and filtering, sinusoidal output 220V alternating current which is proportional to an input signal is formed at two ends of an isolation transformer, and the sinusoidal output 220V alternating current is output to a rear electrode by the isolation transformer.
Preferably, the adjustable switching power supply outputs a direct current voltage for simulating the actual situation in the field. Specifically, the adjustable switching power supply comprises a rectification filter circuit, a high-frequency converter and a width-adjustable square wave rectification filter circuit, 220V alternating current is input from the rectification filter circuit, and direct current is output from the width-adjustable square wave rectification filter circuit after passing through the high-frequency converter. Further, the adjustable switching power supply comprises a sampling circuit, a comparator, pulse width modulation and an oscillator, wherein the sampling of the sampling circuit is compared with a reference voltage by the comparator and then output to the pulse width modulation, the oscillator applies oscillation to the pulse width modulation, and a pulse width modulated signal is output to the high-frequency converter.
Preferably, the analog power supply comprises a casing for accommodating the circuit, wherein the casing is provided with an alternating current output interface, an alternating current charging port, an alternating current switch, a direct current output interface and a direct current switch. The shell is provided with a USB output interface and a USB output switch. The casing is provided with an electric quantity window and a heat dissipation hole.
The utility model mainly comprises an AC/DC power supply and a shunt release, which form a special transformer acquisition terminal control loop analog power supply. The alternating current-direct current power supply comprises a lithium battery, a booster circuit, a full-bridge inverter circuit, an isolation transformer and an adjustable switch power supply, wherein the power supply of the lithium battery is boosted by the booster circuit and then provided for the full-bridge inverter circuit of a later stage, the power supply is transformed into 220V alternating current by the isolation transformer, the 220V alternating current is divided into two paths, one path of the alternating current is directly output, and the other path of the alternating current generates direct current voltage required by the current place by the adjustable switch power supply; the shunt release is connected in series with an alternating current-direct current power supply. The analog power supply is mainly used for analog power supply for analog tripping function test and a virtual load of a control loop of the tripping device, and has the characteristics of meeting the on-site alternating current, direct current and multiple voltage specifications.
The simulation power supply has the advantages of being light in weight, high in capacity and high in power, capable of outputting alternating current and direct current test power supplies, convenient to carry, capable of meeting the power consumption requirement of on-site negative control detection of a special transformer acquisition terminal, capable of simulating the level state on a loop of the on-site special transformer acquisition terminal, comprising an alternating current and direct current state and a voltage range, judging the influence of power supply factors on the loop state of the special transformer acquisition terminal according to a terminal sampling signal and a controlled circuit breaker control end signal state, and capable of simulating the on-site tripping environment by utilizing the working characteristics of an internal shunt tripping device so as to realize the on-site client-side uninterrupted power completion test.
Drawings
FIG. 1 is a functional block diagram of a control loop analog power supply of a private transformer acquisition terminal;
FIG. 2 is a circuit diagram of a boost circuit in an analog power supply according to the present utility model;
FIG. 3 is a circuit diagram of a full bridge inverter circuit in an analog power supply according to the present utility model;
FIG. 4 is a schematic block diagram of an adjustable switching power supply in an analog power supply of the present utility model;
FIG. 5 is a schematic diagram of an application of the analog power supply of the present utility model;
FIG. 6 is a schematic view of the simulated power supply of the present utility model;
FIG. 7 is a schematic diagram of a field application of the analog power supply of the present utility model;
the reference numerals in the figures illustrate:
10 analog power supplies, 20 special transformers, 30 special transformer acquisition terminals, 40 master stations, 50 brake-separating buttons and QF air switches;
100 ac/dc power supply: 110 lithium battery, 120 booster circuit, 130 full-bridge inverter circuit, 140 isolation transformer, 150 adjustable switch power supply, 151 rectifying filter circuit, 152 high-frequency converter, 153 width-adjustable square wave rectifying filter circuit, 154 sampling circuit, 155 comparator, 156 pulse width modulation, 157 oscillator, 158 reference voltage, QR1 triode, QR2 triode and T1 transformer;
200 shunt release;
300 casing: 301 ac output interface, 302 ac charging port, 303 ac switch, 304 dc output interface, 305 dc switch, 306USB output interface, 307USB output switch, 308 power window, 309 heat dissipation hole.
Detailed Description
The present utility model will be described in detail with reference to specific embodiments and drawings.
As shown in fig. 1, the special transformer acquisition terminal control loop analog power supply comprises an ac/dc power supply 100 and a shunt release 200.
The ac/dc power supply 100 includes a lithium battery 110, a boost circuit 120, a full-bridge inverter circuit 130, an isolation transformer 140, and an adjustable switching power supply 150, wherein: the power supply of the lithium battery 110 is boosted by the booster circuit 120 and then provided for the full-bridge inverter circuit 130 at the later stage, and then is transformed into 220V alternating current by the isolation transformer 140, the 220V alternating current is divided into two paths, one path is directly output, and the other path is used for generating direct current voltage required by the current place by the adjustable switch power supply 150.
Shunt release 200 is connected in series with ac/dc power supply 100.
Accordingly, the private transformer acquisition terminal control loop simulation power supply 10 has a structure consistent with that of a client private transformer 20 (a special transformer) as shown in fig. 5, is connected to the private transformer 20 in field use, and is used for testing instead of the private transformer, so that the field client can complete the construction of a testing environment without power outage, the safety control of a private transformer acquisition terminal is ensured to the greatest extent, and the influence of power supply factors on the loop state of the private transformer acquisition terminal is judged.
As shown in fig. 2, the boost circuit 120 includes a triode QR1, a triode QR2, and a high-frequency boost transformer T1, wherein the base electrodes of the two triodes input pulse width modulation signals, the emitter electrodes of the two triodes are connected to the negative electrode of the lithium battery 110, the collector electrode of one triode is connected to one end of the primary coil of the high-frequency boost transformer, the collector electrode of the other triode is connected to the other end of the primary coil of the high-frequency boost transformer, and the midpoint of the primary coil of the high-frequency boost transformer T1 is connected to the positive electrode of the lithium battery 110. The booster circuit 120 converts the power supplied from the lithium battery into ac power by using a Pulse Width Modulation (PWM) technique, boosts the power by a high-frequency booster transformer, and obtains a high-voltage dc power to be supplied to a full-bridge inverter circuit of a subsequent stage after rectifying and filtering.
As shown in fig. 3, the full-bridge inverter circuit 130 includes a full-bridge switch formed by Q1D 1-Q4D 4, the dc voltage VIN is converted by the full-bridge switch formed by Q1D 1-Q4D 4, a high-frequency square wave with sinusoidal content is formed between two points A, B, after power amplification and filtering, a sinusoidal output 220V ac power proportional to the input signal is formed at two ends of the isolation transformer, and the ac power is output to the rear pole by the isolation transformer.
As shown in the schematic block diagram of fig. 4, the adjustable switching power supply 150 includes a rectifying and filtering circuit 151, a high-frequency converter 152, and a width-adjustable square wave rectifying and filtering circuit 153, and 220V ac power is input from the rectifying and filtering circuit 151, and dc power is output from the width-adjustable square wave rectifying and filtering circuit 153 after passing through the high-frequency converter 152. The adjustable switching power supply 150 also includes a sampling circuit 154, a comparator 155, pulse width modulation 156, and an oscillator 157. The sample of the sampling circuit 154 is compared with the reference voltage 158 by the comparator 155 and then outputted to the pulse width modulation 156, wherein the oscillator 157 applies oscillation to the pulse width modulation 156, and the signal of the pulse width modulation 156 is outputted to the high frequency converter 152. Accordingly, a DC voltage for simulating the actual situation in the field is outputted via the adjustable switching power supply (150). A dc voltage of 0-120V can be obtained.
As shown in fig. 6, the analog power supply 10 includes a housing 300 for accommodating a circuit, the housing 300 is provided with an ac output interface 301 for outputting ac power, an ac charging port 302 for charging by the ac power, an ac switch 303 for controlling the turning-off and turning-on of the ac power, a dc output interface 304 for outputting dc power, and a dc switch 305 for controlling the turning-off and turning-on of the dc power. The casing 300 is further provided with a USB output interface 306 for connecting a USB device, a USB output switch 307 for controlling the turn-off and turn-on of the USB output, an electric quantity window 308, and a heat dissipation hole 309, the electric quantity interface is for checking electric quantity, and the heat dissipation hole is for dissipating heat.
When the special transformer acquisition terminal control loop is used for simulating a power supply, the method is operated according to the following steps as shown in fig. 5 and 7:
step 1: the field personnel confirms the trial jump environment and the safety condition and turns off the air switch QF. After the completion, the analog power supply is connected into a control contact of the special transformer acquisition terminal 30 (normally open/COM) through the crimping of a power line;
step 2: initiating a switch trial jump process by a field personnel: the master station 40 sends a switching-off instruction stream to the private transformer acquisition terminal through 4G;
step 3: the special transformer acquisition terminal receives the instruction to switch off, the switch-off button 50 is disconnected, the simulated power supply environment test jump task is completed, and the on-site client is tested without power off.
The specific technical parameters of the special transformer acquisition terminal control loop analog power supply are configured as follows:
1) Output power: and is more than or equal to 300W.
2) Output voltage: AC (alternating current): 0-260V/50Hz; DC (direct current): 0-120V.
3) Ac output waveform: a sine wave.
4) Battery type: a lithium ion battery.
5) Ambient temperature: -20-60 ℃.
Claims (10)
1. The special transformer acquisition terminal control loop analog power supply is characterized by comprising:
an ac-dc power supply (100) comprising a lithium battery (110), a boost circuit (120), a full-bridge inverter circuit (130), an isolation transformer (140) and an adjustable switching power supply (150), wherein: the power supply of the lithium battery is boosted by the booster circuit and then is provided for a full-bridge inverter circuit of a later stage, then the voltage is changed into 220V alternating current by an isolation transformer, the 220V alternating current is divided into two paths, one path of alternating current is directly output, and the other path of alternating current generates direct current voltage required by the current place by an adjustable switch power supply (150);
a shunt release (200) connected in series with the AC/DC power supply (100);
and the power line is used for connecting the special transformer acquisition terminal.
2. The special transformer acquisition terminal control loop analog power supply according to claim 1, wherein: the booster circuit (120) converts the power supply of the lithium battery into alternating current power supply by utilizing a pulse width modulation technology, boosts the power supply by a high-frequency booster transformer (T1), and obtains high-voltage direct current after rectifying and filtering to be supplied to a full-bridge inverter circuit (130) at a later stage.
3. The special transformer acquisition terminal control loop analog power supply according to claim 2, wherein: the booster circuit (120) comprises two triodes and a transformer (T1), wherein pulse width modulation signals are input into base electrodes of the two triodes, emitter electrodes of the two triodes are connected with a negative electrode of the lithium battery (110), a collector electrode of one triode is connected with one end of a primary coil of the high-frequency booster transformer (T1), a collector electrode of the other triode is connected with the other end of the primary coil of the high-frequency booster transformer (T1), and a middle point of the primary coil of the high-frequency booster transformer (T1) is connected with a positive electrode of the lithium battery (110).
4. The special transformer acquisition terminal control loop analog power supply according to claim 1, wherein: the full-bridge inverter circuit (130) is formed by full-bridge switches and comprises a high-frequency square wave with sinusoidal content, after power amplification and filtration, sinusoidal output 220V alternating current which is proportional to an input signal is formed at two ends of an isolation transformer, and the sinusoidal output 220V alternating current is output to a rear electrode by the isolation transformer.
5. The special transformer acquisition terminal control loop analog power supply according to claim 1, wherein: the adjustable switching power supply (150) outputs a direct current voltage for simulating an actual situation in the field.
6. The analog power supply of a control loop of a private transformer acquisition terminal according to claim 5, wherein: the adjustable switching power supply (150) comprises a rectifying and filtering circuit (151), a high-frequency converter (152) and a width-adjusting square wave rectifying and filtering circuit (153), 220V alternating current is input from the rectifying and filtering circuit (151), and direct current is output from the width-adjusting square wave rectifying and filtering circuit (153) after passing through the high-frequency converter (152).
7. The special transformer acquisition terminal control loop analog power supply of claim 6, wherein: the adjustable switching power supply (150) comprises a sampling circuit (154), a comparator (155), pulse width modulation (156) and an oscillator (157), wherein the sampling of the sampling circuit (154) is compared with a reference voltage (158) by the comparator (155) and then is output to the pulse width modulation (156), the oscillator (157) applies oscillation to the pulse width modulation (156), and a signal of the pulse width modulation (156) is output to the high-frequency converter (152).
8. The analog power supply for a control loop of a private transformer acquisition terminal according to any one of claims 1 to 7, wherein: the analog power supply comprises a shell (300) for accommodating a circuit, wherein the shell is provided with an alternating current output interface (301), an alternating current charging port (302), an alternating current switch (303), a direct current output interface (304) and a direct current switch (305).
9. The special transformer acquisition terminal control loop analog power supply of claim 8, wherein: the casing (300) is provided with a USB output interface (306) and a USB output switch (307).
10. The special transformer acquisition terminal control loop analog power supply of claim 8, wherein: the casing (300) is provided with an electric quantity window (308) and a heat dissipation hole (309).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322463380.XU CN220732601U (en) | 2023-09-11 | 2023-09-11 | Special transformer acquisition terminal control loop analog power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322463380.XU CN220732601U (en) | 2023-09-11 | 2023-09-11 | Special transformer acquisition terminal control loop analog power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220732601U true CN220732601U (en) | 2024-04-05 |
Family
ID=90495072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322463380.XU Active CN220732601U (en) | 2023-09-11 | 2023-09-11 | Special transformer acquisition terminal control loop analog power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220732601U (en) |
-
2023
- 2023-09-11 CN CN202322463380.XU patent/CN220732601U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204925251U (en) | Marching type insulation resistance testing arrangement | |
| CN102610970A (en) | Intelligent safe socket and control method thereof | |
| CN102901883B (en) | Trigger test device for thyristor unit of converter valve | |
| CN202075333U (en) | Surge current tester | |
| CN101592718B (en) | High-pressure electroscope field detector | |
| CN110865252A (en) | Output electrical characteristic simulation device of proton exchange membrane fuel cell and control method thereof | |
| CN220732601U (en) | Special transformer acquisition terminal control loop analog power supply | |
| CN103312188B (en) | For power supply and the method for testing thereof of reactor performance test in power electronic equipment | |
| CN110635691B (en) | Current source module | |
| CN110967579A (en) | Test source of no-load metering loop automatic detection equipment | |
| CN110752615A (en) | Battery energy storage power station field joint debugging device and method | |
| CN204376385U (en) | For carrying out the power transmission protective device of power transmission protection to step-up transformer | |
| CN112485727B (en) | Device and method for testing burst short circuit of transformer by utilizing series resonance compensation method | |
| CN201697991U (en) | Short circuit tester | |
| CN201336223Y (en) | Intelligent capacitor with function of harmonic protection | |
| CN202917746U (en) | Intelligent safety socket | |
| CN208781740U (en) | A kind of relay and its zero passage detection arc-suppression circuit for alternating-current charging pile | |
| CN111610438A (en) | Method and system for evaluating capacitive closing performance of switch equipment with closing resistor | |
| CN217133331U (en) | Low-power consumption energy storage PCS experiment platform | |
| CN220043057U (en) | Low-voltage power-off alarm | |
| CN110620501B (en) | PDU testing arrangement | |
| CN215868234U (en) | Lightning arrester electrical test simulation system | |
| CN218974488U (en) | Converter aging test system | |
| CN102842894B (en) | Motor open-phase protection device without auxiliary power supply | |
| CN220752206U (en) | Energy storage load device for direct current endurance test of overcurrent protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |